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rather
Rathlin Island
rathskeller
ratify
ratiné
rating
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ratio scale
ratiocinate
ration
ration out
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rational choice theory
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ratite

rat·ite [ rá tt ] (plural rat·ite or rat·ites)


noun 
Definition:
 
flightless bird: a flightless bird such as an ostrich or emu that has a flat breastbone without the ridge-shaped part keel to which the flight muscles are attached in a flying bird

[Late 19th century. < Latin ratitus "having the figure of a raft" < ratis "raft"]
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